The US Congress has given President Barack Obama a “blank check” to wage wars in the Middle East and other parts of the world, says a veterans advocate and social justice organizer in Denver.

“There has to be some sort of end to this current series of engagements that we’ve gotten to from Afghanistan, Iraq, Syria, Yemen, all of the world really,” said Garett Reppenhagen, who served as a Cavalry Scout Sniper with the 1st Infantry Division in the US Army in 2004, Press TV reported.

The Authorization for Use of Military Force (AUMF) that was passed by Congress in 2001 is “just kind of writing a blank check for any president to be able to use force across the world; I think there has to be some limitations on that,” Reppenhagen told Press TV on Tuesday.

AUMF authorizes the US president to use all "necessary and appropriate force" against those responsible for the attacks on September 11, 2001. The AUMF was signed by former president George W. Bush on September 18, 2001.

Reppenhagen also predicted that the current US military strategy to defeat the ISIL terrorist group in Iraq and Syria with airstrikes will fail.

“It’s really complicated and a military victory, if that’s the only thing that we’re trying to achieve, it’s going to fail,” he said.

Observers say that while the US and its allies claim they are fighting against terrorist groups like ISIL, they in fact helped create and train those organizations to wreak havoc the Middle Eastern countries.

The ISIL terrorists, who were initially trained by the CIA in Jordan in 2012 to destabilize the Syrian government, now control parts of Iraq and Syria.